二极管

In this paper, investigate basic half bridge Three-Level DC/DC converter, the operation and parameter design are disused ,second side commutate diode reverse furbish bring high pinnacle on the main switches.

本文首先给出了基本半桥式三电平DC/DC变换器，详细分析了其工作原理，讨论了主要参数的设计和由于次级整流二极管的反向恢复导致主开关管的电压尖峰。

Light-emitting diode is a compound semiconductor device. In optical radiometry and calibration, LED has good performance of high luminance, energy-cost savings and long life.

发光二极管（LED是一种半导体固体发光器件，在可见-近红外波段的光辐射测量和光电探测器的定标中，显示出高辐射亮度、高电光转换效率、可组合调配光谱分布、发光性能稳定等独特优点，可作为辐射度学、光度学和色度学研究的新型参考光源。

The large effective screen area is formed by cylindrical mirror and fixed laser diode and large area photo-diode respectively on the two conjugate points.

采用圆弧柱面反射镜及置于其两共轭点上的半导体激光二极管和大面积光敏器件形成大面积有效光幕区。

In order to explain the phenomena of negative capacitance in light-emitting diodes, we presented a new model based upon the local strong recombination in active region. And we deduced the analytic expression of NC from continuity equation.

为解释发光二极管中的负电容现象，提出了在有源区与局部强复合效应有关的新模型，首次通过对载流子连续性方程的求解导出了NC的解析表达式。

The transformation between digital signal and DC voltage was made with D/A converser and high voltage amplifier; varactor s were used for tuning components; the bandpass filter was a combline microstrip line one, its dimension was presented.

采用数模转换器和高压运放实现数字信号与直流电压的转换；以变容二极管作为调谐元件；带通滤波器采用梳状微带线结构，并给出了结构参数。

The LEDs generate a coolish white light at 5,000° Kelvin.

发光二极管产生凉丝丝的白光在5000 °凯文。

The "second generation" computers (1960's) used discrete transistors and diodes for data manipulation and magnetic core main storage.

"第二代"计算机(1960年代)用分立晶体管和二极管实现数据处理，用磁芯作主存储器。

Our proxy product includes: SEMKRON; SIEMENS; SanKen; SANRex; FUJI; TOSHIBA; MITSUBISHI; Eupec; HITACHI; IXYS; IR; NIPPON; VICOR; LAMBDA; And so on the overseas well-known company produces GTR, IGBT, IPM,PIM, the silicon-controlled rectifier, the crystal thyratron, quicklyrestore the diode, the rectification bridge.

我们的代理产品有：三菱、三社、三垦、富士、东芝、西门子、西门康、摩托罗拉、IR、EUPEC、IXYS等国外知名公司生产的GTR、IGBT、IPM、PIM、可控硅、晶闸管、快恢复二极管、整流桥。

A semiconductor diode in which the reverse current varies with the intensity of received light.

反向电流随光的照射强度而发生变化的一种半导体二极管。

The adjustments of current pulse width and frequency are achieved by using SMC and CPLD.

介绍了激光二极管脉冲驱动源的控制技术。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。